Superpower compared to SuperTeddyReg

How does Belleson Superpower compare with a SuperTeddyReg regulator?
We compare to the voltage regulator shown
here, called the
SuperTeddyReg regulator. Both devices were
tested with as nearly identical conditions as possible, with both
devices
using the same input supply and Vout nominally = 24V for both regulators (STR was 23.5V with the R2 and R3 shown below).

First, as advertised, SuperTeddyReg has excellent noise
performance. However, it may be better
classified as a low noise voltage reference than as a voltage
regulator. A performance comparison using
both LTSpice and a breadboard shows that Vout varies with load. A
measurement at 700mA (see photo below)
shows almost 1V change in Vout, or load regulation = 28dB. Said another way, a 700mA change in Iout results in a 4% change in Vout.

Simulation also shows that ripple increases with load, going from
22µV with a 2.4mA load
to 520µV with a 602mA load. For the same conditions (Vin=30V,
Vripple=1Vp-p sine wave @ 120Hz), Superpower has essentially
unmeasurable ripple at 2.4mA and 5µV at 605mA.

The SuperTeddyReg built and measured (shown below) uses different JFETs and
small signal NPNs from the original schematic.
The components do not change the primary behavior of the SuperTeddyReg,
which is governed by the an
open loop topology with no feedback to keep Vout constant with load
changes.

Dynamic performance was tested with a 700mA current step for both a
Superpower device and the SuperTeddyReg circuit. Notice C7, which was
added to prevent a low level oscillation. The test circuit was built in
a fastidious way on ground plane. The web site states that the circuit
"allows a maximum current of around 2.5A" so 700mA should not overtax it.

Superpower,
700mA step

Superpower delivering 700mA into 10Ω. The bottom trace shows voltage measured
across a 10Ω load resistor that is switched to Vout, about a 7V step (700mA).
Top trace shows Vout to ground as current steps from 80mA to 700mA. The scales
are the same as the SuperTeddyReg to the right. Notice Vout (top) has a tiny transient
but is essentially flat, what we call "regulated."

Here is the same test, only the vertical scale of the top trace has been magnified to 5mV
per division. Here you can see the true regulation ability of Superpower compared to
SuperTeddyReg. While the Teddy moves about 1V for a 700mA step, the Belleson regulator
moves about 7mV, which is the result of 10mΩ (yes, ten milli Ohms) in the measurement path.

SuperTeddyReg, 700mA
step

SuperTeddyReg
regulator delivering 700mA into 10Ω. Bottom trace shows Vout across a
10Ω resistor. Top trace shows Vout to ground, which ideally should be a
flat line at 23.5Vdc. However, notice the 1V per division scale of the
top trace, showing that Vout changes almost 1V when the load is
applied. This change is a DC shift, not a dynamic effect, due to the
lack of feedback in SuperTeddyReg.

A simulation of the SuperTeddyReg circuit shown above
confirms that a regulator with no feedback does not regulate. It shows 1.2V of change in Vout with
a 700mA change of output current. No amount of fluffy marketing words will make the measurements change.